This paper is a version of an old 1983 paper presented at IV Encuentro hispano-francés de economistas teóricos,
Bilbao (1983). All remaining errors are our ownAs a result of the duality of cost and distance functions the efficiency of cost-minimizing behavior can be compared to shadow-prizing behaviour, and conversely. In this framework we outline the form that dual efficiency measures, Muro (1982), Muro and Vera (1983), adopt for homothetic and linearly homogeneous technologies. To illustrate the subject we provide a numerical example for a technology described by a translog cost functio